Vertical axis, pump and turbine hydraulic coupling



Sept. 22, 1953 T. HUDYMA ET AL VERTICAL AXIS, PUMP AND TURBINE HYDRAULICCOUPLING Filed June 15, 1950 Han] INVENTOR5 Patented Sept. 22, 1953UNITED STATE TENT OFFICE VERTICAL PUMP 'ANDI'TURBNINE HYDRAULIC COUPLINGTheodor Hudyma andMaxy-ln .Olijnyk, Stuttgart-Zuffenhauscn, Germany 8Claims. 1

This invention relates to a rotary pump and turbine fluid coupling.

:One objectof the inventiongis to providea device of this characterwherein liquid-used in the coupling willbe maintained at a constantheight relative to the turbine.

Another object of theinvention is to provide a device of this characterwherein a constant gas pressure will be exerted on top of the liquidused in the coupling.

A further object of the invention is to provide a device of theforegoing character having a turbins and puinp so arranged that thefluid from the pump will have both the centrifugal force and the tangentforce of inertia of movement utilized for separatepurposes.

A still further objeet of the invention is to provide a novelarrangement of a coupling for the purpose'described and wherein thecoupling will have concentric rotary elements enabling the liquid fromthe turbine to be utilized in liquid form and further enabling theaction of the turbine asa driving means for one or moredriv'enmechanisms. v

A still further object of the invention is to provide a novel housingand turbine arrangement wherein liquid from the turbine may be used as ahouse supply or the like. 7

Yet another object of the invention is to provide, in a device of thischaracter, controlling means for the liquid and the gas used, thecontrolling means being arranged to maintain a constant liquid level forthe liquid used by the turbine, therefore keeping a constant gaspressure ont'he top of such liquid.

Furthermore, it is an object of the invention toprovide means, for suchadevice, whereby any gas lost in the operation of the device will beautomatically replaced.

With the above and other objects in view, as will be hereinafterapparent, the invention consistsin general of certain novel details ofconstruction and combinations of parts hereinafter fully described,illustrated in the accompanying drawing, and particularly claimed. I

In the accompanying drawing, like characters of reference indicate likeparts in the several views and:

Fig. 1 is a vertical section through the pump and turbine, the housingand associated parts of the apparatus, and

Fig. 2 is a detail sectional view taken on line In the construction ofthis invention there is This lower housing is open at "the top,and-seated on the rim of the opening there is. provided an upper housing2 whichserves to close theopening at the top of the lower housing and,as will be presently described, forms a gas chamber 3 which is opendownwardly to the housing I. The housing 2 has a tubular upper extension4 on which rests the cap 5 forming the body of a packing gland. Throughthis packing gland extends a shaft 6 constituting the drive shaft of thecoupling and driven by any suitable motor'such as is shown at 1 inFig. 1. Surrounding the shaft 6 in the extension 4 is su'itablepacking 8held in properly compressed condition by an adjustable member 9.Withinthe extension flis arranged asecond packing gland Hl surroundingthe shaft, and between the gland 'l 0 and the wall of the extensionthere is provided an antifrictionbearing l l. The shaft 6 projectsdownwardly into the lower housing and this shaft has fixed-thereon arotor indicated in general by the numeral [2 and which is the innerrotor or radial flow centrifugal pump that drives 'aradi'al flowturbine.

The radialfiow centrifugal pump is of general inverted frusto-conoidalform and has projectrotor rotates in'the direction of the arrow A inFig. 2. Extending downwardly from the center at thebottom of the lowerhousing I is a tubular boss I 6, andthe lower end of the pump fits-inthe "boss 16. Between the inner surface of the boss and the outersurface of the pump there is provided packing I! which is adjustablycompressed by thegland IS. The rotor is thus sealed so that no liquidloss can take place around the lower end of said pump as itpassesdownwardly in the bottom of the housing i. Extending downwardly inalinement with the chamber M is a supply pipe 19 provided with aflangeZU whereby the upper end of this pipe is secured to the boss i6.Pipe l9 communicatesat its lower end, with a suitable supply tank 2| andan upwardly openingcheck valve 22 is provided to prevent downwardmovement of the liquid through the pipe I9. Disposed laterally of theboss "16, the lower housing i is provided with a second downwardlyextending boss 23 acrossthe bottom of which a spider 24 extends. Anipple 25 is secured to the bottom of the boss 23 by means of suitablebolts (not shown) passing through the spider 24. The lower end of thisnipple is likewise spanned by a spider 25. Similarly bolted to the lowerend of the nipple and lower spider is the neck 26 of the draw-on tank21. These spiders 24 and 28 support the gas vent pipe 29 perforated atits lower end. Extending from the lower end of the tank ii is a nozzle35} and a pipe 3| for the used liquid of the device and this pipe may bearranged to extend upwardly as at 32 in order to supply liquid to anelevated tank 33 for use for any desired purpose. In the upwardlyextending pipe 33 is an upwardly opening check valve 34 so that liquidfrom the tank 33 cannot flow downwardly in the pipe 32.

At one side of the housing I is located a casing 35 whereon is a cover36. A p pe 31 connects the bottom of the casing 35 with the top of thetank 2'1. A pipe 38 connects the cover 36 with the housing I above therotary centrifugal pump. Screwed on the cover 36 is a valve casing 38.At one side of this valve casing is an inlet opening 48. At 4! is a gastank for the provision of gas under pressure and a pine 42 connects thisgas tank with the inlet o enin 4%. Within the valve casing is a valveseat 43 and a needle valve 44 extends upwardly from the casing 35 throuh the cover 35 and seats on the valve seat .3. Within the casing 33 is afloat 45 which is connected to one arm of a lever 45 pivoted in thecasing 35. A link i! connects the remaining arm of the lever with theneedle valve 44. Opening outwardly from the valve casing is a boss 48having a pipe 6!! leading therefrom. The pipe 49 opens the rod 55between the closure 54 and the plunger 5i and urges the plunger downwardso that the needle valve 52 will engage on its seat.

Within the upner part of the housing 2 the shaft 5 is surrounded by asleeve 58 at the upper end of which, between the shaft and sleeve, isarranged an anti-friction bearing 59. On the shaft ii is a collar 65 onwhich rests a thrust bearing 5! holding the sleeve in proper position.Also a lateral bearing 62 spaces the lower part of the sleeve 58 fromthe shaft 6. Fixed to and surrounding the lower part of the sleeve 58 isa rotatable support 63 which spreads out above the before-mentionedrotor or centrifugal pump I2 and carries on its periphery a ring 64.This ring 64 surrounds the ejection ports of the pump I2 and on itsinner surface supports a circumferentially spaced series of lunate vanes65 as shown in Fig. 2 and so arranged that their concave sides receivethe fluid issuing from the ejection nozzles I5 and constitute a radialflow turbine.

Alongside of the member 4 the housing 2 is provided with a packing box66 through which extends a power take-off shaft 61. The shaft 6? isintended for connection to any desired mechanism. Below the packing box66, the housing 2 is provided with a bearing 68 through which the shaft61 passes. Also, the shaft 6! extends through a bearing 69 supported inan extension II! of the extension 4. On the lower end of the shaft iii,where it projects into the housing 2,

there is provided a gear H wherewith meshes a gear I2 formed on theupper part of the sleeve 58. Between the housing 2 and the housing 5arranged a partition I3 for the confinement of gas under pressure. Fixedto the circumferential wall of the housing I are bafiie blade i i endingclose to the radial flow centrifugal pump I2.

At one side of the housing I there is positioned a sight water gage 15which is connected with the tank 21 by means of a pipe 18 provided witha shut-off valve II. From the upper end of the sight gage 75 extends apipe 78 which connects to a T-fitting I9 one branch of which extends tothe left to the pipe 38, While the other branch extends by way ofT-fitting Bil to chamber 2 and manometer 84. A cut-off valve 82 controlspassage through the lower branch of the T-fitting 8%. A pointer 83 iscarried by the housing I and projects in front of the sight gage #5.

In the operation of the invention, when the motor 'Idrives the shaft 6,the radial flow centrifugal pump is rapidly revolved. Due to centrifugalaction liquid is drawn up through the supply pipe I9 into the centralchamber I i of the pump and from there is elected through the passages!5. The ejected liquid impinges against the vanes or buckets E5 of theturbine and causes rotation of the sleeve ring 64, support 53 and sleeve58. This, through the gears '52 and ii, causes rotation of the powertake-off shaft 67. The float 45 is so arranged that liquid in the tank35 will be at a level substantially even with the pointer 83. Because ofthe connection 3! between the tank 35 and the tank 2?, together with thenipple 3!, a water-level along the line WL will obtain in housing I. Itwill be noted from the Fig. 1 showing, that this water level is belowthe line of the buckets or vanes. In the pipe 42, the valve 84 is nowopen. At the same time the valves TI and 36 are open. With the openingof the valves 82 and 85 and the manually opened needle valve 52 likewisein open position, the needle valve 44 will tend to open as the float t5rises. With the valve 34 open, under these conditions gas under pressurewill be admitted through the pipe 49 to the upper part of the housing I.When the desired reading is bad on the manometer 8!, under theseconditions, the valve 52 is allowed to close. The closing will oc curwhen reading of the sight gage i5 is that desired by the operator, thisbeing at such time as the tank or other disposal means at 33 is providedwith water from the turbine. With the valve 52 closed, gas under desiredpressure, as indicated by the manometer M, will have been accumulatedabov the water level. Thus a balance will exist between liquid in thetank 35 and liquid in the housing I. If any gas is absorbed by theliquid or if there is any escape of gas from the housing I, the floatwill rise to open the needle valve 44 and this rising of the water levelwill be clearly indicated on the sight gage I5. The operator may thenopen the needle valve 52 as before, whereupon the proper pressure willbe restored in the housing I and the proper reading will show on themanometer. It is to be ob served that the baffles 14 prevent swirling ofthe liquid in the housing I so that its flow into the tank 21 is along asmooth path.

In order to provide for filling the pip-e I9 to a point closely belowthe chamber I4, and thus to avoid loss of lift by the creation of apartial vacuum in said chamber, there is provided a capped fillingnozzle 85.

While there is herein shown and described the preferred embodiment ofthe invention, it is nevertheless to be understood that minor changes"may be made-therein without departing fromthe spirit and scope of-theinvention as claimed.

What is claimedas new, is: 1. In adevice of the kind described, a lower"housing, an upper housing superimposed on the lower housing, saidhousings being circular in plan and surrounding a vertical axis, a motordriven drive shaft extending through the top of the upper housing andterminating in th lower housing a radial flow centrifugal pump fixed onthe lower'endof the drive shaft and discharging in a 'horizontalplane,said pump having a central downwardly extending intake and a supply pipetherefor extending through the bottom ofthe lower housing, a turbinerotatably mounted on said drive-shaft and having a circular series ofblades in the plane of discharge-of the pump, means-maintaining aconstant level-of liquid below said horizontal plane in thelower-part ofthe lower housing, and other means maintaining a constant high gaspressure in the upper part of the lower housing.

2. In a device of the kind described, a lower housing, an upper housingsuperimposed on the l wer h u in aid hous ngs. being circular in planand surrounding a vertical axis, a motor driven drive shaft extendingthrough the top of the upper housing and terminating in the lowerhousing, a radial flow centrifugal pump fixed on the lowerend of thedrive shaftand discharging in'a horizontal plane, said-pump having acentral downwardly extending intake and a supply pipe therefor extendingthrough the bottom of the lower housing, a turbine rotatably mounted onsaid drive shaft and having a circular series of blades in the plane ofdischarge of the pump, a delivery pipe leading downwardly from thebottom of the lower housing, an overflow pipe leading downwardly in thedelivery pipe and terminating at its upper end in spaced relation belowthe turbine, and means maintaining constant high gas pressure in theupper part of the lower housmg.

3. In a device of the kind described, a lower housing, an upper housingsuperimposed on the lower housing, said housings being circular in planand surrounding a vertical axis, a motor driven drive shaft extendingthrough the top of the upper housing and terminating in the lowerhousing, a radial flow centrifugal pump fixed on the lower end of thedrive shaft and discharging in a horizontal plane, said pump having acentral downwardly extending intake and a supply pipe therefor extendingthrough the bottom of the lower housing, a turbine rotatably mounted onsaid drive shaft and having a circular series of blades in the plane ofdischarge of the pump, means maintaining a constant level of liquidbelow said horizontal plane in the lower part of the lower housing, ahigh pressure gas supply, a valve controlling the flow of gas from thegas supply, a pipe connection leading from said valve, a pressureregulating valve connected to said pipe connection and opening into thelower housing, and liquid level operating means controlling the firstvalve.

4. In a device of the kind described, a lower housing, an upper housingsuperimposed on the lower housing, said housing being circular in planand surrounding a vertical axis, a motor driven drive shaft extendingthrough the top of the upper housing and terminating in the lowerhousing, a radial flow centrifugal pump fixed on the lower end of thedrive shaft and discharging in a horizontal-plane, said pump having acentral downwardly extendingiintake and a supply pipe therefor extendingthrough the bottom of the lower housing, a turbine rotatably mounted onsaid nection and opening into the lower housing, a

liquid controlling tank spaced laterally from the lower :housing andprojecting above and below -:the horizontal level of the liquid insaidhousing, and a float in said tank having operative connection withthe first mentioned'valve.

5'. Ina device of the kind described, alower housing, anupper'housingsuperimposed on the lower housing, said housings being circular in planand surrounding a vertical axis, a motor driven drive shaft extendingthrough the topof the upper housing and terminating in the lowerhousing, a radial flow centrifugal pump fixed on the lower end of thedrive shaft and discharging in a horizontal plane, said pump having acentral downwardly extending intake and a supply pipe therefor extendingthrough the bottom of the lower housing, a turbine rotatably mount--edxonsaidldriveshaft and having a circular series of blades in theplane of discharge of the pump, means maintaining a constant level ofliquid below said horizontal plane in the lower part of the lowerhousing, a high pressure gas supply, a valve controlling the flow of gasfrom the gas supply, a pipe connection leading from said valve, apressure regulating valve connected to said pipe connection and openinginto the lower housing, a liquid controlling tank spaced laterally fromthe lower housing, and projecting above and below the horizontal levelof the liquid in said housing, a float in said tank having operativeconnection with the first mentioned valve, and a valve controlled gasconducting pipe leading from the space within the lower housing throughthe top of said tank.

6. In a device of the kind described, a lower housing, an upper housingsuperimposed on the lower housing, said housings being circular in planand surrounding a vertical axis, a motor driven drive shaft extendingthrough the top of the upper housing and terminating in the lowerhousing, a radial flow centrifugal pump fixed on the lower end of thedrive shaft and discharging in a horizontal plane, said pump having acentral downwardly extending intake and a supply pipe therefor extendingthrough the bottom of the lower housing, a turbine rotatably mounted onsaid drive shaft and having a circular series of blades in the plane ofdischarge of the pump, a delivery pipe leading downwardly from. thebottom of the lower housing, an overflow pipe leading downwardly in thedelivery pipe and terminating at its upper end in spaced relation belowthe turbine, a high pressure gas supply, a valve controlling the flow ofgas from the gas supply, a pipe connection leading from said valve, apressure regulating valve connected to said pipe connection and openinginto the lower housing, and liquid level operating means controlling thefirst valve.

'7. In a device of the kind described, a lower housing, an upper housingsuperimposed on the lower housing, said housings being circular in plan'and surrounding a vertical axis, a motor driven shaft extending throughthe top of the upper housing and terminating in the lower housing, aradial flow centrifugal pump fixed on the lower end of the drive shaftand discharging in a horizontal plane, said pump having a centraldownwardly extending intake and a supply pipe therefore extendingthrough the bottom of the lower housing, a turbine rotatably mounted onsaid drive shaft and having a circular series of blades in the plane ofdischarge of the pump, a delivery pipe leading downwardly from thebottom of the lower housing, an overflow pipe lead ing downwardly in thedelivery pipe and terminating at its upper end in spaced relation belowthe turbine, a high pressure gas supply, a valve controlling the flow ofgas from the gas supply, a pipe connection leading from said valve, apressure regulating valve connected to said pipe conriection and openinginto the lower housing, a liquid controlling tank spaced laterally fromthe lower housing and projecting above and below the horizontal level ofthe liquid in said housing, and a fioat in said tank having operativeconnection with the first mentioned valve.

8. In a device of the kind described, a lower housing, an upper housingsuperimposed on the lower housing, said housings being circular in planand surrounding a vertical axis, a motor driven drive shaft extendingthrough the top of the upper housing and terminating in the lowerhousing, a radial flow centrifugal pump fixed on the lower end of thedrive shaft and discharging in a horizontal plane, said pump having acentral downwardly extending intake and a supply pipe therefor extendingthrough the bottom of the lower housing, a turbine rotatably mounted onsaid drive shaft and having a circular series of blades in the plane ofdischarge of the pump, a delivery pipe leading downwardly from thebottom of the lower housing, an overflow pipe leading downwardly in thedelivery pipe and terminating at its upper end in spaced relation belowthe turbine, a high pressure gas supply, a valve controlling the flow ofgas from the gas supply, a pipe connection leading from said valve, apressure regulating valve connected to said pipe connection and openinginto the lower housing, a liquid controlling tank spaced laterally fromthe lower housing and projecting above and below the horizontal level ofthe liquid in said housing, a float in said tank having operativeconnection with the first mentioned valve, and a valve controlled gasconducting pipe leading from the space within the lower housing throughthe top of said tank.

THEODOR HUDYMA. MAXYM OLIJNYK.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,078,710 Weir Nov. 18, 1913 1,551,055 Rieseler Aug. 25, 19251,672,232 Saives June 5, 1928 1,975,505 Fottinger Oct. 2, 1934 2,380,595Hertrich July 31, 1945

